Surgical operating-engine.



No. 812,507. PATBNTED PEB. 13, 190e. W. H. LUDBWIG.

SURGICAL OPERATING ENGINE.

APPLICATION FILED DB0.30,1'904.

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. PATENTED EEB. 13, 1906.

W. H. LUDEWIG.

SURGICAL OPERATING ENGINE.

APPLICATION FILED DBO.30,1904.

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-NITED STATESV WILLIAM H. LUDEWIG, OF` ROCK ISLAND, ILLINOIS. suRGlcAl. OPEIman-*lNewt-:NelNE.v

Specification of Letters Patent,

Patented Feb. 13, 19o6.

Application filed December 30, 1904. -Serial No. 238,947.

l 5 useful Improvements in Surgical Operatin Engines; and I hereby declare that the fo lowing is a full, clear, and exact description thereof, reference bein had to the accompanying drawings,which orm part of this specixo fic'ation.

This invention is an improvement in surgical instruments, and is an o erating-engine especially designed to be he d in the hand and used as the operative handle for saws, files, chisels, and other instruments used by -physicians in operations in nasal passages and other internal cavities of the body. The engine is also adapted for use with dental instruments, such as pluggers and cutters.

The invention is partlcularly designed for operating reciprocating instruments, such as saws; but I do not restrict myself to such use except when so specified in the claims. Moreover, the engine may be used by artisans in and while, as stated, it is particularly designed for use by surgeons and dentists I do not limit myself to such use.

The several novel features of the engine and combinations of parts therein for which protection is desired are summarized in the claims and will be clearly understood from the following description, in connection with the accompanyin drawings, which illustrate the best form of t e invention now known to me,but are not intended to be restrictive thereof.

In said drawings, Figure 1 is aside view of the complete engine with a saw attached. Fig. 2 is a top view of Fig. 1. Fig. 3 is a horizontal section. Fig. 4 is a section on line 4 4, Fig. 1. Fig. 5 is a section on line 5 5, Fi 1. Fig. 6 is a top plan view ofthe part B. i s. 7 and 8 are detail views of the rods E F detached. Fi 9 is a horizontal sectional view showing a s ight-modification, in which the balancing-rod is omitted. Fig. 10 is a similar view of another modification, in which a rotar tool-holder is em loyed. Fig. 1'1 is a deta' side view of anot er modification.

' The preferred form of engine shown in Figs. lhto 8 comprises two hollow parts A and B, one end of the latter being slidably fitted into the open end of the former, so as to the mechanic arts if properly proportioned,

be supported thereby, but projecting there- 5 from. The partAis provided with a depending handle A of such size and form as wIll enable the operator to grasp it firmly and cornfortably. From one side of part A projects a tubular stud a, in which is journaled a shaft 6 C, on the outer end of which is fixed a driving-gear c, which is preferably a frictional gear. The inner end of shaft C vis provided with a double crank c c2 for a purpose hereinafter explained. The gear c may be' pro- 6 tected by a housing a', attached to the outer end of stud a, as shown. The part B is also rovided with a laterally-projecting stud b, 1n which is journaled a shaft D, on which is a gear d, adapted to contact or mesh with and 7 drive gear c when moved toward it. The stud b projects through a slot A2 in the sidel of part A, as shown in the drawings, so that studs a b are parallel. The ear d is protected by a housing b', screwed on the outer 7 end of stud b, as shown. The gears c d may be of any suitable peripheral contour, and I now prefer to have one ridged and the'other grooved, as indicated in Figs. 9 and 10, but of course do not restrict myself to any spe- 8 cie forml of gear.

The outer end of shaft D ma'y be threaded, as at D', and the housing b may have a threaded 'extension b2, so that the engine may be connected to the terminal of a sheathed 8 flexible shaft, (not shown,) such as are commonly employed in dental and surgical oflices and which can be operated by an electrical or other suitable motor. (Not shown.) Shaft D, however, may be driven in any desired manner, the particular power connection of the motor therewith being immaterial.

Part B is provided with a depending fingerpiece B', resembling a tri ger, which can be grasped by the finger. of t e operators hand 9 and forms part of the handle of the en ine, and by drawing trigger B toward hand e A gear d is brought into Contact with gear c and the 'latter is driven. Normally the gears are separated by means of a suitably-arranged spring. As shown in Figs. 1 and 2, a bent spring I is interposed between the studs a b and tends to push them apart and normally .holds part B In its projected position. The

outward movement of part B is limited by a 1 screw b4, tap ed thereinto through a slot a4 in the lower wa l of part A.

Part B is hollow, and therein are placed -two reciprocatory rods E and F, the inner ends of Whch'are Wldened and flattened,.as at E F, and project into slots c f in part B.-

Said: ends E F are'verticallyslotted, as atf2 e2, and are respectively transixed and engagedby the cranks c c2 on shaft C, so that by rotating the said shaft the rods are reciprocated. The outer ends E2 F2 of rods E F are prefe'rabl rounded and pass through openingsin the eny ls of part B,as shown. As the rods E F are operated by diametrically-opposed cranks, they counterbalance each other andfpreventor materially lessen vibration of theengine. The projecting ends ofthe rods E F maybe formed or the attachment of tools. A's'shown, onl the rod E has its end threaded, and a too holder head Gr is attachedthereto, sa'id 'head bin slotted, aslatg, for the insertionof the s a With a thumb-screw'g to secure the instrument thereto. 4 v.

As shown 'in Fig. 9, the rod Fis omitted, only the rod E being used andthis is centered in part B, and the shaft C isl rovided with but a single crank c3, engagin t e slotinhead E. ,The 'gear c'is shovnwit convex'v'edge adaptedto'enga-ge a concave Vedgein'g'ear d; otherwise the construction and' operation 'is ubstantially the-same asof the tool shown in In Fig. "10'instead cfa reciprocating rod a vrotary rodl J- h'as one end journaled'infpart A1 and the other endn'projectsthrou hand is j ournaled. -ln 'part BJ and lhasa tooll oldery on its outer end, to which 'a rota tool', such asa bur, can be'attached. On t ev shaftf'Jg isa bevel-gear j, Which is ada ted-'tomesh'wlthj'a likegear con the inner en' n "of shaft @,b? vwhich rotary motion is im arted from "sha t C 'to shafts-. The julnJ 0f the Shaft@ Dat'B issnch as will permitfpart vB lto"move"sufficientl'y to bring gear d into mesh-Rth gear c.

By this c'onstructicnfrot'ary movement' of' the toolijs obtained,

contain the operativeparta'an part'A iinstead ofsulpporting the 'operative fparts is? made into' a o'X-slide',B- ntted-'nfpart, but carries the-'shaft D 'gear ,andfingerpece B', so that the operation ofthe parts'is controllabl'e by thefgrip ofthe operator, asini'the 'otherconstructions. In Flg. 1'1, moreover, i's shoigvnl a`modied arrangement of separating-spring.

Instead of the'spring I an expansive helical' of' a tool or instrument land is Eprovided l "Iln Fig. 11partAijsmdalongnon hiro- 't elatter reciprocates the bars E F with great rapid-ity, The bar F is preferably made heavier than bar E, so that it will counterbalance the Weightlof the bar E and attached tool,

and thus reduce the vibration of the engine to the minimum. By simply relaxing the .gras of the forefinger the engine is stop ed.

T e utility of this engine-handleis sel -evident,-an'd its adaptability to surgical and dental purposes is apparent. It is also obvious that if'made of sufficient sizeand Weight the engine is 'adapted for general use in the arts, and 'the fpreferred form is particularly useful Where reciprocating or 'vlbratory 'tools are employed. 'Having thus described my invention, what I claim as new, and desire to secure by Letters 'Patent,isp 1. In an engine of the character s ecied, the combination of a vpair of relative y movable members, a crank on one member, a reciprocating rod on the other member' adapted to beactuatedby'said crank, and means for rotating said crank.

2. In combination, a pair ofrelatively movable members, 'a double crank on one niember,a pair'of reciprocating'rods on 'the yothermember'adapted to-'be actuated in op,-

.posite` directions. b'y said crank; and means gfor rotating said' crank, substantially as and' for thelpurpose set forth.

In combination, a member providedv lWitha handle, a movablemember, a' crankon 1 the first member, 'a reciprocatory rod ion: the

movable member' actuated by the crank, and

IOO

meanson`the movable memberad'apteditc operatetlie; crank, substantially' as set'forth.

4. In 'combinatioma member provided' fWi'tha handle, a second'member slid'ably supi-A ported'on the-'first member, a'double crank on'the'rst member, a pair ofreciprocatory rods on`the movable member, respectively 'actuated b 'oneofthecr'ank's' and-'means on the movab e member adapted to operatefthe 'crank-'shaft 'when moved towardthe latter,

substantially as set' forth.

t.' "In cmbinatin, arelatively satana; part, 'a' relatively movable part, a crank-'sha t journaled n the-stationary art, adriving- 'shaftjournaled on the mova le'part, means for'transmitting Imotion from the'drivin vto the' crank shaft when' the former is move to War'd-the latter,` and a reciprocating rodl attached to the movable member andoperated by the crank-shaft, substantially as described. 6. In combination, arelatively stationary.

part providedwith a handle, arelatively movable part connected'with the stationary part and' supportedthereby, aI crank-shaft journaled on the stationary art, 'a driving-shaft journaled on the movab e part, and-gearing.

for transmitting motion from the drivin to the crank shaft when the former is move toward the latter; with a reciprocating rod attached to the movable member and adapted to be operated by the crank-shaft, and a toolconnecting device on the rod, substantially as described.

7. In combination, a member provided with a handle, a crank-shaft journaled in said ment to said rod, substantially as described.

8. In combination, a hollow stationary memberprovided with a handle, a shaft journaled in said member having a crank on its inner end, and a gear on itsouter end; a hollow movable member supported in and rojecting from the stationary member, a nfiiving-shaft journaled in said movable member, and a gear on said shaft adapted to contact with the gear on the crank-shaft when the movable member is drawn inward, a spring for normally separating the gears, and a reciprocatory bar mounted in said movable member and engaging the crank on the crankshaft, and' means for connecting an instrument to said rod, all substantially as .and for the purpose described.

9. In combination, a stationary member provided with a handle and a tubular stud, a crank-shaft 'ournaled in said stud, and a gear on said sha t; a movable member, a fingerpiece on the movable member for drawing it toward the handle, a tubular stud on said movable member, a driving-snaft'z'journaled therein; opposed gears on said shafts, adapted to befbrought into coperative relation by moving the movable member toward the handle, means for normally separating the gears, a pair of reciprocatory rods mounted in the movable member and operated by cranks on the crank-shaft, and means for connecting an instrument to one of said rods, substantially as described. v

10. In combination, a hollow stationary member rovided with a handle, a tubular stud pro ecting from said "member, a shaft journale in said stud and having cranks on its inner end within the member, and a frictional gear on its outer end; a hollow movable member supported in and projecting from the stationary member, a finger-piece4 depending from said movable member, a laterallyrojecting hollow stud on said member, a living-shaft journaled in said stud,

. and a frictionalgear on said shaft adapted to contact with the gear on the crank-shaft when the movable member is drawn inward,

a 's ring for normally separating the gears, p an va pair of reciprocatory bars mounted in said movable member and engaging the op- 'osite cranks on the crank-shaft, and means or connecting an instrument to one of said rods, all substantially as and for the purpose described.

1 1. In an engine of the character specified, the combination of a tool-operating member, a driven shaft, means for operating the said member from said shaft; anda support for said parts adapted to be held in t e hand; with a driving-shaft also mounted on said support, gears for transmitting motion from the driving-shaft to the driven shaft, means for holding said gears normally out of contact, and a finger-actuated device whereby lthe gears may be moved into' operative contact, substantially as set forth.

12. In combination, a member provided rwith a handle, a rotatable shaft journaled on said member, a second member connected with said iirst member, a rotatable shaft on` ythe second member, gears onl said shafts adapted tcrbe brought into operative contactbodily movement of the memv by relative bers, a tool-actuating rod or shaft, and means for o erating said rod from the first-melitione shaft, substantially as and for Athe, purpose described. v

13. In combination, a member provided with a handle, a rotatable shaft journaled'on said member, a second member slidably connected with said first member, a rotatable shaft on the second member, gears on said roo shafts adapted to be brought into operative contact by moving one member upon'the other, a sprin inter osed between sald members to keep t e sai gears apart, a tool-actuating rod o eratin said rod from the first-mentioned s aft, su stantially as and for the purpose described.

14. In combination, a member provided with. a handle, a laterally-projecting shaft `ournaled on said member vhaving a gear on Its outer end; a second member movably mounted on the rst member and having a. laterally-v rojecting shaft, and a gear on said shaft, said gears being brought into. operative relation by moving the members rela.- tively, a spring or separating said gears, and a tool-actuating rod actuated by said-first mentioned shaft, substantially as and for the purpose described. 1

15.v In combination,

ally-projecting sleeve, a s aft journaled in mounted in said members, and for IIO a member provided with a handle, and a laterallyrojecting4 'said sleeve, and e gear on said shaft, said l In testimony that I claim the foregoing aS gears being brought into operative relation my own I aHix my vsignature in presence of y moving the latter member upon the iirst tWo Witnesses.

member, a spring'for separating said gears, v WILLIAM LUDEWIG. 5 and a reciprocating tool-actuating rod actu'- In presence of ated byvsaid first-mentioned shaft, substan- FRANK X. BIGKEL,

tially as and for the purpose deseribed. WM. C. SOHOEMAKER. 

